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StMAPK10 gene functional identification and analysis in drought resistance of potato crop (Solanum tuberosum L.)

文献类型： 外文期刊

作者： Majeed, Yasir 1 ; Zhang, Ning 2 ; Zhu, Xi 4 ; Liu, Shengyan 1 ; Si, Huaijun 2 ;

作者机构： 1.Gansu Agr Univ, Coll Agron, Lanzhou, Peoples R China

2.Gansu Agr Univ, State Key Lab Aridland Crop Sci, Lanzhou, Peoples R China

3.Gansu Agr Univ, Coll Life Sci & Technol, Lanzhou, Peoples R China

4.Chinese Acad Trop Agr Sci, South Subtrop Crops Res Inst, Key Lab Hainan Prov Postharvest Physiol & Technol, Minist Agr & Rural Affairs,Key Lab Trop Fruit Biol, Zhanjiang, Peoples R China

期刊名称：PHYSIOLOGIA PLANTARUM （ 影响因子：6.4； 五年影响因子：5.9 ）

ISSN： 0031-9317

年卷期： 2024 年 176 卷 3 期

页码：

收录情况： SCI

摘要： All over the world, potato (Solanum tuberosum L.) production is constrained by several biotic and abiotic factors. Many techniques and mechanisms have been used to overcome these hurdles and increase food for the rising population. In crop plants, the mitogen-activated protein kinase (MAPK) cascade, a significant regulator of the MAPK pathway under various biotic and abiotic stress conditions, is one of the targets to increase productivity. MAPK plays a significant role under drought stress in potato. However, the function of MAPK in drought resistance in potato is poorly understood. In this study, we wanted to identify the function of StMAPK10 in the drought resistance in potato. StMAPK10 was up-regulated under drought conditions and dynamically modulated by abiotic stresses. Over-expression and down-regulation of StMAPK10 revealed that StMAPK10 stimulated potato growth under drought conditions, as demonstrated by changes in SOD, CAT, and POD activity, as well as H2O2, proline, and MDA content. StMAPK10 up-regulation exaggerated the drought resistance of the potato plant by uplifting antioxidant activities and photosynthetic indices. Overexpressed-StMAPK10 potato lines showed highly significant results for physiological and photosynthetic indices in response to drought stress, while knockdown expression showed opposite outcomes. Additionally, subcellular localization and phenotypic analysis of transgenic and non-transgenic plants substantiated the role of the increased expression of StMAPK10 against drought stress. The results could provide novel insights into the functionality of StMAPK10 in drought responses and conceivable mechanisms.

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